Pet Person was the original incarnation of Little Computer People, before it was brought by Activision as a concept, and re-designed/developed by David Crane into the game we all know and love.

The original concept was fairly similar to the final game, but Activision would add the likes of a card game and make changes to sound and music throughout. According to Todd Marshall, a lot was changed overall from the original game.

The original concept was about a year in the making, suggesting that it was probably created and sold in 1984 to Activision.